FIRST DOWN. All progress in a football game is measured in yards. The offensive team tries to get as much yardage as it can to try and move closer to the opponent's end zone. Each time the offense gets the ball, it has four downs, or chances, in which to gain 10 yards.
The largest eagle species in the world is the Pithecophaga jefferyi or Philippine eagle. This species of eagle is on the critically endangered list due to the rapid decline in habitat, which is the tropical rainforest. Keep Learning.
In the species overall, males may average around 3.6 kg (7.9 lb) and females around 5.1 kg (11 lb). The maximum size of this species is a matter of some debate. Large races are the heaviest representatives of the Aquila genus and this species is on average the seventh-heaviest living eagle species.